Assignee
Inventors
- Susumu Mizuta (9 patents)
- Iwao Yamaguchi (6 patents)
- Toshiya Kumagai (15 patents)
- Takaaki Manabe (8 patents)
- Wakichi Kondo (12 patents)
- Tadao Shimizu (26 patents)
- Tsuyoshi Terayama (1 patents)
US Patent 6183554 · Granted Feb 6, 2001